sw rev. 55B DEVICE FOR THE PERMANENT CONTROL OF INSULATION ON THE SUPPLY LINES IN MEDICAL PRACTICE PLACES INSTALLATIONS

Transcription

1 INSTRUCTIONS MANUAL IM831-U v0.92 HRI-R40W sw rev. 55B DEVICE FOR THE PERMANENT CONTROL OF INSULATION ON THE SUPPLY LINES IN MEDICAL PRACTICE PLACES INSTALLATIONS INDEX: GENERAL TYPES ACESSORIES AND OPTIONS INSTALLATION WIRING DIAGRAMS CONNECTING TERMINALS DIAGRAMS WIRING DIAGRAM DESCRIPTION WORKING DESCRIPTION AND KEYBOARD WORKING DESCRIPTION AND PROGRAMMING KEY s FUNCTIONS PROGRAMMING INSTALLATION SETUP CONFIGURATION SETUP OPERATION DIMENSIONS TECHNICAL CHARACTERISTICS GENERAL HRI-R40W is a device for controlling the supply lines of medical practice places (installations with insulated neutral IT-M) which allows the insulation control towards earth of the supply network so as the thermal and electric overload of the transformer. In such a way it accomplishes what it is required by the specific standards regarding the present applications. The insulation resistance control is being made by applying a measure signal between the insulated line and the earth. By measuring the current flowing to earth it is possible to supervise the insulation level. The actual state of the art of measures allows the correct measure of the insulation value, even in presence of great disturbances with high harmonic components and direct current components. The HRI-R40W type uses a direct-current component control signal. In order to reduce the problems generated by the presence of direct current components in the line (presence of rectifiers, etc.,) this device is fitted with a digital filter capable to identify the direct current component present in the line. HRI-R40W has a wide range of programming with the front keys and the digital LED type display of 3 digits for visualising of measuring and programming parameters. The instrument is fitted with 2 temperature inputs for thermal s or PTC (DIN 44081) type, for controlling the thermal overload of the insulation transformer, and 1 measuring current input, by an external CT, for controlling the line s overload. The outputs can be used with the remote signalling panels type PR5. There is a relay output programmable by the user. There is one RS485 serial port output as an option for a bidirectional communication with a control system (PLC, PC, etc.). The communication protocol is the MODUBUS-RTU (see specific manual). The instrument complies with the following standards: EN / IEC / CEI 64.8/7-710 V2 / UNE TYPES: HRI-R40W Vaux: V 50-60Hz ACCESSORIES Accessories: - Remote flush-mounted signal panel (universal box E503) type PR5 HRI-R40W Instructions manual IM831-U v0.92 pag. 1 / 12

2 INSTALLATION The installation must be carried out in absence of voltage by qualified and authorized personnel only. Before installing, make it sure that the instrument has not suffered any damage due to transport. It has to be verified that the supply voltage is compatible with the product s defined supply voltage. Each independent line can use one control device only. The modular instrument (6 modules 17,50mm) is fitted of sealable transparent cover, to be mounted on DIN rail mounting 35mm. WIRING DIAGRAM Connecting terminals A Auxiliary power supply (rated voltage 115 / 230V 50-60Hz) B Link fail function input (permanent control of network connection) C Measure input for resistance and insulation impedance D Connection to remote signal panels type PR5 E Serial port RS485 F Thermal input 2 for or PTC G Thermal input 1 for or PTC H Current measuring input with external current transformer /5 A I Programmable auxiliary relay output (changeover contact 250V 5A) HRI-R40W Instructions manual IM831-U v0.92 pag. 2 / 12

3 Wiring diagram with PR4 panel for single phase line IT-M with insulation transformer and centre intake of the secondary: Vaux:* 115V 115V RS485 serial port (option) Vaux:* link fail 115V 115V control input 2 (or PTC) input 1 (or PTC) current input TA.../5A auxiliary relay output HRI-R40W insulation control PR4 remote control panel remote control panel PR power supply Vaux: 115Vca power supply Vaux: 230Vca PE S S current transformer.../5a PC L INSULATED NETWORK (IT-M) LOAD N INSULATION TRANSFORMER to other PR4 panels HRI-R40W Instructions manual IM831-U v0.92 pag. 3 / 12

4 Wiring diagram with PR5 panel for single phase line IT-M with insulation transformer and centre intake of the secondary: 19 A B C PT 2+A PT2+B PT2- PT1+A PT1+B PT1- CT-S2 CT-S1 R-NO R-C R-NC RS 485 serial port (option) Vaux:* link fail 115V 115V control input 2 ingput 1 current input TA.../5A insulation control remote control panel auxiliary relay output HRI-R40W AUX -L1 AUX-01 AUX -L2 AUX-02 LF-PE LF-L VC-L VC-PE TE ST+ TE ST- ACK ACUS OVER COM-P V-P FAULT remote control panel PR V-P ACUS ACK OVER FAULT COM-P TEST- TEST+ COM-S F-S TEST-S auxiliary power supply Vaux: 230Vca PE TO OTHERS PR5 PANELS S S PC L ISOLATED NETWORK (IT-M) LOAD N INSULATION TRANSFORMER HRI-R40W Instructions manual IM831-U v0.92 pag. 4 / 12

5 Three phase wiring diagram in IT-M line: RS485 serial port (option) input 2 input 1 current input TA.../5A auxiliary relay output HRI-R40 link fail control insulation control PR4 remote control panel to PR4 panel auxiliary power supply Vaux: 230Vca adder current transformer 5A A S1 S1 S1 LOAD S1 S1 P1 S1 P1 INSULATION TRANSFORMER INSULATED NETWORK (IT-M) P1 current transformers.../5a Wiring diagram thermal s type : Wiring diagram thermal s type PTC: PTC PTC R = 120 ohm R R PT2+A PT2+B PT2- PT1+A PT1+B PT input 2 input 1 PT2+A PT2+B PT2- PT1+A PT1+B PT input 2 input 1 HRI-R40W Instructions manual IM831-U v0.92 pag. 5 / 12

6 Wiring diagram measure section on single-phase phase IT-M line with insulation transformer without the centre tap of transformer s the secondary: Wiring connection measure section on threephase IT-M line three wires without neutral link fail control insulation control link fail control insulation control auxiliary power supply Vaux:230 Vca auxiliary power supply Vaux:230 Vca INSULATED NETWORK (IT-M) L1 L2 INSULATION TRANSFORMER L3 INSULATION TRANSFORMER INSULATED NETWORK max 230V L-L (IT-M) WIRING DIAGRAM DESCRIPTION HRI-R40 Auxiliary power supply Terminals The section of power supply is made with double input 115V of rated voltage. To supply the instrument with 230V, connect the two sections in series. To supply the instrument at 115V connect the two section in parallel. Link fail control Terminals 6-7 The two terminals must be connected between one phase of the insulated line and the equipotential node (PE). The maximum voltage is 250V (see insulation control). Insulation control Terminals 8-9 The two terminals must be connected between the centre tap of the transformer or to one phase of insulated line and the equipotential node (PE) The maximum voltage is 230Vac. Consequently the single phase network could be 230V, the three-phase 3 wires 230V phase-phase, whilst the three-phase 4 wires will be max. 230V phase-neutral. Connection to remote signal panel type PR5 Terminals The maximum voltage on these conductors is 24V. RS485 serial port (option) Terminals The serial bus is on the A-B terminals (19-20), the C terminal (21) is a ground signal that can be connected to the RS485 shield (if present). MODBUS-RTU is the standard used protocol (see the relative manual). HRI-R40W Instructions manual IM831-U v0.92 pag. 6 / 12

7 Thermal input 2 Terminals It s possible to use (EN 60751) or PTC (DIN 44081) sensor type. If with 3 wires is used, it is required to connect a compensation conductor at the same terminal. With the PTC it s necessary to use an external resistor of 120 ohm min ¼ W. Thermal input 1 Terminals It s possible to use sensor (EN 60751) or PTC sensor (DIN 44081). If with 3 wires is used, it is required to connect a compensation conductor at the same terminal. With the PTC it s necessary to use an external resistor of 120 ohm min ¼ W. Measuring current input Terminals Connection to external current transformer with secondary 5 A (the transformation ratio is programmable). The current is measured in absolute value: A possible inversion of S1-S2 is not of great importance. Output auxiliary relay Terminals Voltage free changeover contact with programmable functions. Contact range: 250V 5A resistive load. FUNCTIONS DESCRIPTION AND KEYS R [k ] Z [k ] T1 [ C] T2 [ C] I [A] SET MIN / MAX + _ insulati on moni tor HRI-R40 ALARM OUTPUT RELAY RESET SET ERROR / LINK FAIL TEST ENTER DESCRIPTION: 1. Display to visualise the settings and the parameters under the control 2. Green SET LED to signal the instrument programming condition 3. Yellow ALARM LED to signal the alarm of parameter value beyond of threshold 4. Red LED OUTPUT RELAY to signal the condition of the auxiliary relay 5. Red LED ERROR / LINK FAIL to signal the alarm of internal failure, lack of connection of the line under control, thermal type open or in short circuit 6. Red LED R to signal the visualisation of the insulation resistance parameter (k ); flashing led if the parameter is beyond of threshold 7. Red LED Z to signal the visualisation of the insulation impedance C, flashing led if the parameter is beyond of threshold 8. Red LED T1 to signal the visualisation of the transformer s temperature parameter, flashing led if the parameter is beyond of threshold 9. Red LED T2 to signal the visualisation of the temperature parameter of the second, flashing led if the parameter is beyond of threshold 10. Red LED I to signal the visualisation of the line s current, flashing led if the parameter is beyond of threshold 11. +/- UP/DOWN keys to select the parameter to display, to configure the setting of the instrument and to visualise the maximum and minimum values stored. 12. RESET SET key to accede to the instrument programming, to silence the alarms and to delete the values stored 13. TEST ENTER key to test the instrument and the PR4 remote signal panel; to confirm the settings of the SETUP HRI-R40W Instructions manual IM831-U v0.92 pag. 7 / 12

8 FUNCTIONS AND PROGRAMMING 888 R [k ] Z [k ] T1 [ C] T2 [ C] I [A] SET MIN / MAX + _ insulation monitor HRI-R40 ALARM OUTPUT RELAY RESET SET ERROR / LINK FAIL TEST ENTER E D C B A Keys functions With normal operation the + and keys (D and C) allows to select the parameter to be visualised on the display and indicated by E led. ATTENTION: if a measure is not enabled (for example the T2 temperature input is not enabled), the relative LED will remain off. If only the resistance measure is enabled, the visualisation will be fixed. The B key allows silencing the acoustic signalling of the connected PR5 panels. The function is the same as the SILENCE function in the remote panels. In minimum and maximum visualisation mode this key allows the deleting of stored values. The A (TEST) key allows the functional test of the instrument simulating a low insulation: holding pressed the key it will appear on the display the simulated value of insulating resistance that it will go down (up to 0) causing the alarm trip for low resistance. The instrument comes back to the effective measure value when the key is released Visualisation of minimum and maximum memorised values By pressing at the same time the D C keys will accede to the visualisation of the minimum and maximum memorised values that will be displayed with a continuous flashing. With the C key it is possible to visualise the values of the various parameters. During the visualisation of the maximum and minimum values, it s possible to reset the memorised values, by pressing the B key (RESET): keep pressed the key during 3 seconds at least, until the message RES (RES) appears on the display in order to confirm the cancellation. To escape from the minimum and maximum visualisation it s necessary to wait 8 seconds without pressing any key. HRI-R40W Instructions manual IM831-U v0.92 pag. 8 / 12

9 PROGRAMMING The SETUP menu (programming) is subdivided in two sections: in the first one it s possible to set the condition of basic functioning (installation), whilst in the second it is possible to set the tripping threshold levels and the activation mode of the auxiliary relay. Installation SETUP: To accede to the installation SETUP press the C - B (SET / -) keys simultaneously during 3 seconds at least. The glowing of the LED SET confirms the entrance in the SETUP. It s possible to modify the parameters setting with the A-B keys. Press the A key (ENTER) to confirm. The setup is cyclic: after the last parameter, the setup comes back to the first. To escape from the SETUP it s necessary to wait 8 seconds without pressing any key. Press A or B keys to increase or decrease the values respectively (the variation is being made unit by unit). In order to speed up the operation, keep the B or C keys pressed, the variation will be made by tens and hundreds. To increase or decrease the value by unit, it is necessary to release and to press the key again. The OFF selection is selectable under the minimum of the scale of the parameter s setting. The indication of the parameter s setting blinks alternatively with a help message. Installation SETUP: trip delay Function measure enabling / trip delay measure enabling / type measure enabling / type measure enabling / trip delay transformation rate nominal frequency network under control not activated auxiliary relay status serial port setting (option) low insulation resistance low insulation impedance temperature input T1: temperature input T2: Setting Display indication Signalling (default) parameter flash led SET + led R 1 4 seconds DLY led SET + led Z led SET + led T1 led SET + led T2 off 1 4 seconds off PTC off PTC high current I led SET + led I off 1 60 seconds external current led SET + led I off transformer 1 40 Fail Safe function Off OFF ptc pt1 OFF ptc pt1 Off Off DLY MOD MOD DLY CT led SET 50 / 60 Hz 50_ / 60_ FRE led SET + led OUPUT RELAY blinking De-energized / excited (fail safe on) address network led SET Id address baud rate led SET baud parity, data bit, stop bit led SET none,8,1 none,8,2 even,8,1 odd,8,1 NOP / NCL SET ID N81 N82 E81 O81 The default parameters are underlined. The meaning of the delay for the resistance and the insulation impedance is an elaboration time for the internal filter. This time could be increased in presence of strong disturbances in the line under control. BDR PAR HRI-R40W Instructions manual IM831-U v0.92 pag. 9 / 12

10 Configuration SETUP: To accede to the configuration SETUP keep pressed the B key (SET) during 3 seconds at least. It s possible to modify the parameters setting with the A-B keys. Press the A key (ENTER) to confirm. The setup is cyclic: after the last parameter, the setup comes back to the first. To escape from the SETUP it s necessary to wait 8 seconds without pressing any key. Press A or B keys to increase or decrease the values respectively (the variation is being made unit by unit). In order to speed up the operation, keep the B or C keys pressed, the variation will be made by tens and hundreds. To increase or decrease the value by unit, it is necessary to release and to press the key again. Configuration SETUP Function (if activated) Configuration display indication Signalling (default) parameter flash led R kohm SET tripping threshold insulation resistance low auxiliary relay activation for low resistance tripping threshold low insulation impedance auxiliary relay activation for led Z + led OUTPUT RELAY off / on ON / Off REL low impedance flashing auxiliary relay activation for led OUTPUT RELAY + led off / on ON / Off REL error condition and Link Fail ERROR/LINK FAIL flashing tripping threshold high temperature T1: if selected led T1 off / C OFF / SET if PTC selected led T1 off / on ON / Off REL led R + led OUTPUT RELAY off / on ON / Off REL flashing led Z off / kohm OFF / SET auxiliary relay activation for led T1 + led OUTPUT RELAY off / on ON / Off REL high temperature T1 flashing tripping threshold high temperature T2: if selected led T2 off / C OFF / SET if PTC selected led T2 off / on ON / Off REL auxiliary relay activation for led T2 + led OUTPUT RELAY off / on ON / Off REL high temperature T2 flashing tripping threshold high current I led I off / 00,0 99,9 A OFF / SET auxiliary relay activation for high current I The default parameters are underlined. led I + led OUTPUT RELAY flashing off / on ON / Off REL Note: The resistance measure function is always enabled to the measure, the others functions can be set only if they are enabled in the installation SETUP. To come back to default value When the instrument is being switched on press the TEST and RESET keys simultaneously to come back to the default value for all SETUP. After 4 seconds it will appear the following messages: DEF, VAL, INI, YES (DEF, VAL, INI, YES). When the instrument is switched on again, the SETUP parameters will come back to default values. HRI-R40W Instructions manual IM831-U v0.92 pag. 10 / 12

11 OPERATION In the normal condition of operation the instrument shows the measure of the selected parameter. It is possible to select all of available measures (if enabled) with the + / - keys. By pressing + / - keys simultaneously it will accede to the maximum and minimum visualisation and the measure on display flashes. If the s used are PTC the value showed will be only TLO (low temperature), HOT (temperature near to the tripping threshold) or THI (high temperature). If a measure parameter exceeds the maximum end-scale, on the display it will appear the message HI_ (hi_ HIGH).The OUPUT RELAY led will glow only if the auxiliary relay is activated. The visualisation of the enabled measure parameters could be substituted by an error message (the ERROR /LINK FAIL LED glows). The signalling are the following: Measured parameter Visualisation Error condition Visualisation (if activated) led display (Led ERROR) led display insulation resistance led R / HI_ / HI_ Link Fail led R LF_ LF_ insulation impedance led Z / HI_ / HI_ led Z LF_ LF_ T1 temperature () led T / HI_ / HI_ in short circuit led T1 SHr (short) SHR T1 temperature () led T / HI_ / HI_ open circuit led T1 OPE (open) ope T1 temperature (PTC) led T1 TLO/HOT/THI TLO/HOT/THI T2 temperature () led T / HI_ / HI_ in short circuit led T2 SHr (short) SHR T2 temperature () led T / HI_ / HI_ open circuit led T2 OPE (open) ope T2 temperature (PTC) led T2 TLO/HOT/THI TLO/HOT/THI current I led I 0 99,9 / HI_ ,9 / HI_ The glowing of the LED ALARM indicates the condition of a parameter beyond threshold. The LED of the signalled parameter will flash if the visualisation is not selected. The signalling are the following: Measured parameter (if activated) Visualisation insulation resistance led R / HI_ (high) / HI_ insulation impedance led Z / HI_ (high) / HI_ T1 temperature led T / HI_ (high) () / HI_ T1 temperature led T1 TLO (low temp.) / HOT (PTC) TLO / HOT T2 temperature: led T / HI_ (high) () / HI_ T2 temperature: led T2 TLO (low temp.) / HOT (PTC) TLO / HOT current I led I 0 99,9 / Hi_ (high) ,9 / Hi_ Alarm conditions display flashing signalling / Hi_ /HI_ THI (high temp.) THI / Hi_ /HI_ THI (high temp.) THI 1 99,9 / Hi_ ,9 / Hi_ led R led Z led T1 led T1 led T2 led T2 NOTE Enabling measures. If the measures are not enabled in the installation SETUP, the insulation resistance R is the only measure parameter always enabled. In this condition no modification will be done by pressing the + and key. DIMENSIONS led I _ RESET TEST 45 DIN rail mounting 35mm according with DIN modules 17,5 mm HRI-R40W Instructions manual IM831-U v0.92 pag. 11 / 12

12 TECHNICAL FEATURES Auxiliary supply voltage V 50-60Hz ±20% Maximum consumption 5 VA Voltage of the line under control V 50-60Hz Maximum measuring current 1 ma Maximum measuring voltage 24V Control signal type Composite codify signal Internal impedance 200 kohm Insulation measure kohm / HIGH - resolution 1 k, accuracy 5% ± 1 digit Impedance measure kohm / HIGH - resolution 1 k, accuracy 5% ± 1 digit (test signal 2500 Hz) Temperature measures 2 inputs (one optional) from thermo type Rd at 2 or 3 wires C, - resolution 1 C, accuracy 2 % ± 1 digit or from PTC (DIN 44081) Current measure from external CT with secondary 5A, accuracy 5% ±1 digit, (transformation ratio 1 40) Tripping threshold low insulation resistance kohm - hysteresis 10% - delay settable, automatic reset typical tripping delay: 3 seconds, max 8 seconds low insulation impedance (possible to unable) kohm - hysteresis 10% - delay settable, automatic reset typical tripping time:3 seconds, max 8 seconds over temperature input 1 (possible to unable) C with - hysteresis 10%, automatic reset - (with PTC depending on the ) over load current ,9 A delay settable 1 60 seconds, automatic reset Diagnostic signalling Instrument out of line (link fail), thermal open or short circuit, internal error, interference error Outputs output to supply PR5 panel (up to 2 remote signal panel), max 24Vdc output for PR5signalling panel for low insulation, over temperature transformer, insulation and overload of the line auxiliary relay output with programmable function, NO-C-NC 5A 250Vac to enable for low insulation, low impedance, over temperature 1 and 2, over load, link fail or error, fail safe function Optional: serial port RS485, standard protocol MODBUS-RTU, baud rate 2,4-4,8-9,6-19,2 kbps / n,8,1 n,8,2 e,8,1 o,8,1 Visualisation insulation resistance value and signalling of value over maximum scale measured temperature value by measure channel 1 and 2 and signalling of value over maximum scale measured current value and signalling of value over maximum scale insulation impedance value and signalling of value over maximum scale programming parameter instrument off line (link fail), temperature error and internal error output status storing of minimum insulation, maximum temperature and maximum current Dimension, weight self-extinguishing thermoplastic enclosure - DIN 35mm mounting dimension 6 modules, protection by sealable transparent cover - 0,4 kg Connection screw terminals max cross section 2,5 mm 2 Protection degree IP50 frontal side, IP20 enclosure Environmental operating temperature C, storage temperature C, humidity < 95% Insulation 2,5 kv 60 sec. Standards safety CEI-EN of product CEI-EN / CEI 64.8/7-710 V2/ IEC / UNE electromagnetic compatibility CEI-EN Remark In consideration of the evolution of the products and standards, the company reserves the right to modify at any time the features of the product described in this literature, therefore we recommend to always verifying them beforehand. The manufacturer s liability for damages resulting from product defects may be reduced or deleted ( ) when the damage is attributable jointly to a product defect and to the negligence of the injured party or of a third party for whom the injured party is responsible (Article 8, 85/374/CEE) HRI-R40W Instructions manual IM831-U v0.92 pag. 12 / 12